Event Factoid:
Those who thought the Henotikon was insufficient without an
anathema of Chalcedon refused to commune with those who thought is was sufficient.
Sources:
Ernest Walter Brooks,The Sixth Book of the Select Letters of Severus, Patriarch of Antioch, in the Syriac
Version of Athanasius of Nisibis. Translation, Part II: Letters III.1-XI.1, vol. 2.2 (London: Williams and Norgate, 1904), p: 330, part: V.11.